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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/jingle_glue/jingle_client.h"
#include "base/logging.h"
#include "base/message_loop.h"
#include "base/string_util.h"
#include "remoting/jingle_glue/http_port_allocator.h"
#include "remoting/jingle_glue/iq_request.h"
#include "remoting/jingle_glue/jingle_info_request.h"
#include "remoting/jingle_glue/jingle_thread.h"
#include "third_party/libjingle/source/talk/base/basicpacketsocketfactory.h"
#include "third_party/libjingle/source/talk/base/ssladapter.h"
#include "third_party/libjingle/source/talk/p2p/base/sessionmanager.h"
#include "third_party/libjingle/source/talk/p2p/base/transport.h"
#include "third_party/libjingle/source/talk/session/tunnel/tunnelsessionclient.h"
namespace remoting {
JingleClient::JingleClient(JingleThread* thread,
SignalStrategy* signal_strategy,
talk_base::NetworkManager* network_manager,
talk_base::PacketSocketFactory* socket_factory,
PortAllocatorSessionFactory* session_factory,
Callback* callback)
: enable_nat_traversing_(false),
thread_(thread),
state_(START),
initialized_(false),
closed_(false),
initialized_finished_(false),
callback_(callback),
signal_strategy_(signal_strategy),
network_manager_(network_manager),
socket_factory_(socket_factory),
port_allocator_session_factory_(session_factory) {
}
JingleClient::~JingleClient() {
base::AutoLock auto_lock(state_lock_);
DCHECK(!initialized_ || closed_);
}
void JingleClient::Init() {
{
base::AutoLock auto_lock(state_lock_);
DCHECK(!initialized_ && !closed_);
initialized_ = true;
}
message_loop()->PostTask(
FROM_HERE, NewRunnableMethod(this, &JingleClient::DoInitialize));
}
void JingleClient::DoInitialize() {
DCHECK_EQ(message_loop(), MessageLoop::current());
if (!network_manager_.get()) {
VLOG(1) << "Creating talk_base::NetworkManager.";
network_manager_.reset(new talk_base::NetworkManager());
}
if (!socket_factory_.get()) {
VLOG(1) << "Creating talk_base::BasicPacketSocketFactory.";
socket_factory_.reset(new talk_base::BasicPacketSocketFactory(
talk_base::Thread::Current()));
}
port_allocator_.reset(
new remoting::HttpPortAllocator(
network_manager_.get(), socket_factory_.get(),
port_allocator_session_factory_.get(), "transp2"));
if (!enable_nat_traversing_) {
port_allocator_->set_flags(cricket::PORTALLOCATOR_DISABLE_STUN |
cricket::PORTALLOCATOR_DISABLE_RELAY);
}
// TODO(ajwong): The strategy needs a "start" command or something. Right
// now, Init() implicitly starts processing events. Thus, we must have the
// other fields of JingleClient initialized first, otherwise the state-change
// may occur and callback into class before we're done initializing.
signal_strategy_->Init(this);
if (enable_nat_traversing_) {
jingle_info_request_.reset(
new JingleInfoRequest(signal_strategy_->CreateIqRequest()));
jingle_info_request_->SetCallback(
NewCallback(this, &JingleClient::OnJingleInfo));
jingle_info_request_->Run(
NewRunnableMethod(this, &JingleClient::DoStartSession));
} else {
DoStartSession();
}
}
void JingleClient::DoStartSession() {
session_manager_.reset(
new cricket::SessionManager(port_allocator_.get()));
signal_strategy_->StartSession(session_manager_.get());
// TODO(ajwong): Major hack to synchronize state change logic. Since the Xmpp
// connection starts first, it move the state to CONNECTED before we've gotten
// the jingle stun and relay information. Thus, we have to delay signaling
// until now. There is a parallel if to disable signaling in the
// OnStateChange logic.
initialized_finished_ = true;
if (!closed_ && state_ == CONNECTED) {
callback_->OnStateChange(this, state_);
}
}
void JingleClient::Close() {
Close(NULL);
}
void JingleClient::Close(Task* closed_task) {
{
base::AutoLock auto_lock(state_lock_);
// If the client is already closed then don't close again.
if (closed_) {
if (closed_task)
thread_->message_loop()->PostTask(FROM_HERE, closed_task);
return;
}
closed_task_.reset(closed_task);
closed_ = true;
}
message_loop()->PostTask(
FROM_HERE, NewRunnableMethod(this, &JingleClient::DoClose));
}
void JingleClient::DoClose() {
DCHECK_EQ(message_loop(), MessageLoop::current());
DCHECK(closed_);
session_manager_.reset();
signal_strategy_->EndSession();
// TODO(ajwong): SignalStrategy should drop all resources at EndSession().
signal_strategy_ = NULL;
if (closed_task_.get()) {
closed_task_->Run();
closed_task_.reset();
}
}
std::string JingleClient::GetFullJid() {
base::AutoLock auto_lock(jid_lock_);
return full_jid_;
}
IqRequest* JingleClient::CreateIqRequest() {
return signal_strategy_->CreateIqRequest();
}
MessageLoop* JingleClient::message_loop() {
return thread_->message_loop();
}
cricket::SessionManager* JingleClient::session_manager() {
DCHECK_EQ(message_loop(), MessageLoop::current());
return session_manager_.get();
}
void JingleClient::OnStateChange(State new_state) {
if (new_state != state_) {
state_ = new_state;
{
// We have to have the lock held, otherwise we cannot be sure that
// the client hasn't been closed when we call the callback.
base::AutoLock auto_lock(state_lock_);
if (!closed_) {
// TODO(ajwong): HACK! remove this. See DoStartSession() for details.
//
// If state is connected, only signal if initialized_finished_ is also
// finished.
if (state_ != CONNECTED || initialized_finished_) {
callback_->OnStateChange(this, new_state);
}
}
}
}
}
void JingleClient::OnJidChange(const std::string& full_jid) {
base::AutoLock auto_lock(jid_lock_);
full_jid_ = full_jid;
}
void JingleClient::OnJingleInfo(
const std::string& token,
const std::vector<std::string>& relay_hosts,
const std::vector<talk_base::SocketAddress>& stun_hosts) {
if (port_allocator_.get()) {
// TODO(ajwong): Avoid string processing if log-level is low.
std::string stun_servers;
for (size_t i = 0; i < stun_hosts.size(); ++i) {
stun_servers += stun_hosts[i].ToString() + "; ";
}
LOG(INFO) << "Configuring with relay token: " << token
<< ", relays: " << JoinString(relay_hosts, ';')
<< ", stun: " << stun_servers;
port_allocator_->SetRelayToken(token);
port_allocator_->SetStunHosts(stun_hosts);
port_allocator_->SetRelayHosts(relay_hosts);
} else {
LOG(INFO) << "Jingle info found but no port allocator.";
}
}
} // namespace remoting
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